Pith Number

pith:CNXI5YWQ

pith:2016:CNXI5YWQJYYHHUQEXTF7YGU34B

not attested not anchored not stored refs pending

Multiple list colouring of planar graphs

Xuding Zhu

arxiv:1605.04690 v1 · 2016-05-16 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CNXI5YWQJYYHHUQEXTF7YGU34B}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:14:46.488630Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

136e8ee2d04e3073d204bccbfc1a9be04734668b872a153be4ca1eefa7f71915

Aliases

arxiv: 1605.04690 · arxiv_version: 1605.04690v1 · doi: 10.48550/arxiv.1605.04690 · pith_short_12: CNXI5YWQJYYH · pith_short_16: CNXI5YWQJYYHHUQE · pith_short_8: CNXI5YWQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CNXI5YWQJYYHHUQEXTF7YGU34B \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 136e8ee2d04e3073d204bccbfc1a9be04734668b872a153be4ca1eefa7f71915

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2aee49ed65bfe82822845ba963a315c5f6d100345ffdb329e87fc61c4472dbf6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-05-16T09:26:34Z",
    "title_canon_sha256": "a7d2777db12f64b7d7901bfc99f4799b74cdbda571e55da02de4044751eab8d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.04690",
    "kind": "arxiv",
    "version": 1
  }
}